Combined machine-tool and crane.



L. l. YEOMANS.

COMBINED MACHINE TOOL AND CRANE.

APPLICATION HLED MAR-3. 1916- RENEWED OCT. 11. 1919.

1,286,867, Patented Dec. 3,1918.

' CZZQ J frame of the lathe, 2

LUCIEN I. YEOMANS, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMALGAMATEDMACHINERY CORPORATION,

or CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK.

COMBINED MACHINE-TOOL AND CRANE.

Application filed March 3', 1916,

To all whom it may concern:

Be it known that 1, LUCIEN I. YEOMANS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Combined Machine-Toohand Crane, ofwhich the following is a specification.

The object of this invention is to provide a machine tool, as forexample, a lathe, with improved means to facilitate the operation ofplacing work in the machine and of removing the finished pieces. 7

In the accompanying drawings Figure 1 is a perspective fragmental viewof a combination lathe and crane embodying the features of my invention.Fig. 2 is aview of one of the tongs or grapples of the crane.

In the drawings,

the chuck or face plate carried by the head stock, 3 the dead centercarried by the tail stock, and 4 the tool rest or carriage. An upright 5is rigidly secured to the framework of the lathe. An arm 6 is pivotallysupported upon the upper end of the upright 5 for pivotal movement in ahorizontal plane. To the free end of the arm 6 is secured a verticalspindle or pivot 7 extending downwardly from the arm. mountedintermediate its ends upon the pivot 7 for rotation in a horizontalplane. At the opposite ends of the carrier 8 are sheaves 9 carrying arope or cable 10, which is free to be reciprocated in said sheaves. Tothe opposite ends of the cable 10 are secured grapples or tongs 11 ofany suitable construction. Each tong 11 is adapted to embrace andsupport a piece of work of the kind for which the machine tool isintended, as for example, the case of an explosive shell. In theembodiment herein shown, 12 are the jaws of the tongs, 13 the handles,14 are links pivotally connecting the handles to the lower end of a bar15, and 16 is a hand-leverpivoted to the upper end of the bar 15 andconn cted intermediate its ends to the end of the cable. 17 is a pivotedlatch to lock the handle in the position shown in the's'everal views.Preferably, the cable 10'is of such length that when one of the tongs isin engagement with a shell case lying. upon the floor and the handle ofthat tongs is up, the other tongs is at the right height to engage ashell case held by the lathe centers, the

Specification of Letters Patent.

1 denotes the bed or A carrier 8 1s pivotally or s'wiveled, v

Patented Dec. 3, 1918.

Serial No. 81,804., Renewed October 11, 1918. Serial No. 257,792.

hand-lever of the last mentioned tongs being down. v

While the manner of using the crane may be varied, one method isasfollows: Assume that the handle of the tongs 0 is up; that sa d tongsis in engagement with a case b lying on the fioor beside the lathe.Assume also that the handle of the tongs d is down.

weights carried by the opposite ends of the cable 10 are equal save forthe material removed from the case a in the lathe, be seen that to raisethe case 6 into the horizontal plane of the lathe centers, the operatorneeds merely to exert enough force to compensate for the materialremoved in the lathe. The case I) having been raised into the horizontalplane of the lathe centers, sa1d case is swung into position between thecenters, the arm 6 and carrier 8 revolving to the required extent. Thecase I) having been chucked in the machine, the tongs 0 are releasedfrom the case b and swung clear of the machine. While the case b isbeing turned in the lathe, the operator disengages' the case a from thetongs d and engages said tongs with another case to be turned. As soonas the case b has been turned, the operator places the tongs 0 inengagement therewith and removes said case b from the lathe ashereinbefore described.

It will be seen that the lathe and its crane constitute a unitary,self-contained structure, thus obviating the necessity of providingspecial supports in the building for the crane. It will also be evidentthat the pivoted arms 6 and 8 permit the pieces operated upon to beraised and lowered and swung into and out of position between the itwill lathe centers with a minimum of exertion on I claim as myinvention:

1. The combination of a machine tool, an upright supported thereby, anarm pivoted to said upright to swing in a horizontal plane. a carrierswivelcd to said arm and. positioned to swing in a horizontal planerelatively to the arm, a cable reciprocably supported by said carrierand freely movable therein, and Work-engaging devices attached to therespective ends of the cable,

whereby either work-engaging device is raised as the other is lowered.

2. The combination of a machine tool, an upright supported thereby, anarm pivoted at one end to said upright to swing in a horizontal plane, avertically-disposed bolt-secured to the other end of said arm, a carrierha 'ing means between the ends thereof to rotatably engage said bolt toswing in a horizontal plane relatively to the arm, a cable reciprocablysupported by said carrier and freely movable therein, and work-en gagingdevices attached to the respective ends of the cable, whereby eitherWork-engagingdevice is raised as the other is,

lowered.

In testimony whereof, I have hereunto set my hand.

LUCIEN I. YEOMAN'S,

